The process
Carbon black is unloaded, conveyed and weighed into the mixers under extraction, with bag filters on every transfer. The fans sit on the clean side with sealed bearings, because the dust penetrates everything.
The gas
Carbon black is extremely fine, adhesive and penetrating. The fan is on the clean side of a bag filter, with seals that keep the dust out of bearings and a wheel that can be cleaned.
Fans in this process
| Duty | What it does here | Type usually selected |
|---|---|---|
| Bag Filter Fan | Pulls the process gas through the filter bags and discharges the cleaned gas to the stack. | Backward curved and radial tipped |
| Dust Collector Fan | The fan behind a bag filter, cyclone or multiclone on a dust extraction system. | Backward inclined and radial tipped |
| Ventilation Fan | Moves air through a plant or building for fresh air supply, heat removal and fume dilution where the system is ducted. | Backward inclined and forward curved |
| HVAC | Supply, return and exhaust fans for heating, ventilation and air conditioning of plant and office space. | Axial, backward inclined and forward curved |